Improvement in lamps



W. H. SMITH.

' Lamp.

No. 221,476. Patented Nov. 11, 1879.

vii/07%? MPEIERS, PHOTG-LITNOGRAPHQR, WASHINGTON. D C- WILLARD H. SMITH,

FFICE.

OF NEW YORK, N. Y.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 221,476, dated November11, 1879; a plication filed June 6, 1879.

To all whom it may concern:

Be it known that I', WILLARD H. SMITH, of New York city, in the countyof New York and State of New York, have invented certain new and usefulImprovements in. Lamps; and I do hereby declare that the following is afull, clear, and exact description of the invention, which will enableothers skilled in the art to which it appertains to make and use thesame, reference being bad to the accompanying drawings, and to lettersof reference marked thereon, which form a part of this specification.

This invention relates to certain improvements in th'at class of lampsin which gasoline or other light product of petroleum is employed as anilluminating agent, and it is parlicularly designed for street-lamps,although it is applicable to other kinds of lamps.

The gasoline and other petroleum products are generally contaminatedwith slight impurities, and often contain water in smallquantities,which are apt to settlein the pipe leading from the reservoir to theburner of the lamp, and obstruct said pipe and extinguish the light,besides making it necessary to take the lamp to pieces and remove theobstructions in the tube or burner, which is a troublesome andinconvenient operation.

It is my object to overcome this difficulty, and to this end I providethe reservoir with a sediment well or receptacle formed in and extendingbelow the bottom of the reservoir, a discharge cock or valve beingplaced at the lower part or end of said receptacle.

The pipe that conducts oil from the reservoir to the burner has its endbent so as to extend over the top of the reeeptacle, the oritice of saidpipe being preferably placed on a level with the bottom of thereservoir, so that it may take as far as possible all the oil from thereservoir.

In the drawings, Figure 1 represents an elevation of a boulevard-lamp,showing my improvement applied thereto. Fig. 2 represents a top view ofthe reservoir detached, with a portion broken away to show the interior.Fig. '3 represents a side view of the reservoir detached, with a portionbroken away.

The letter A represents a street-lamp, which may be of any suitabledesign, although that pattern known as the Boulevard lamp is by means ofwhich any collected sediment or water may be drawn off. Said receptacleor well is located below the opening of the pipe E leading to thebL1rner F, and preferably immediately below the upperend of said pipe,so as to receive and collect the sediment or water immediately below thepoint of entrance of the gasoline to the pipe E, in order to effectuallyprevent the entrance of any such sediment or water into the pipe E.

The cook or valve at the lower part of the receptacle or well alsoserves as a means of drawing off the gasoline from the reservoir, whichis desirable where the lamps are only used periodically-as, forinstance, in cities where the lamps are not put in use during moonlightnightsin which case there would be a waste of oil by evaporation whilethe lamps were not in operation.

The pipe E extends downwardly, and is bent and carried to the center ofthe lamp-glass, and being provided with a burner, G, of any suitabledescription. In the present instance a burner known as a vapor-burner isillustrated, in which the gasoline is vaporized by the heat of the flameand the vapor is burned to furnish the light.

I prefer to form in the lower horizontal portion of the pipe E a bend,D, which serves to hold the gasoline in a body between the reservoir andburner and prevent any gas or vapor generated in the pipe from findingits way back to the reservoir.

The fount or reservoir is set at a slight inclination, so as to bringthat portion from which the tube E extends below the other por tions, toinsure the entire consumption of the gasoline; and for the same purposethe mouth of the tube is placed as close as practicable to the floor orbottom of the reservoir, as shown in Fig. 3.

The reservoir in Fig. 3 is provided with a float, F, to indicate thelevel of the liquid therei u.

extending below the bottom of said reservoir, and provided with adraw-01f cook or its equivalent, and a feed-pipe with its mouth ororifice placed over said receptacle, substantially as herein shown anddescribed.

In testimony that I claim the foregoing as my own I hereunto aflix mysignature in presence of two witnesses.

W. H. SMITH.

Witnesses:

YINTON COOMBS, W. B. HALE.

